Handle for a bag



FIG. 1 is a front view of a handle for a bag showing my new design, the rear being identical;

FIG. 2 is a top plan view;

FIG. 3 is a bottom plan view;

FIG. 4 is a side view taken from the right of FIG. 1;

FIG. 5 is a side view taken from the left of FIG. 1. 

The ornamental design for a handle for a bag, as shown and described. 